Valve



I March 3,-1931. G JOHNSON 1,794,462

VALVE Filed Jan. 15. 1930 is I Patented Mar; 3, 1931 UNITED STATES PATENT oFFIcE ousrar I. Jonn'son, OF Mariana, massacnusnr'rs, assrenon ro auromarrc noon WAXING MACHINE CORPORATION, OF MLLDEN, MASSACHUSETTS, A CORPORATION MASSACHUSETTS V.ALVE

Application filed Ilanuar y 15, 1930.- Serial No. 420,973.

My present invention relates to valves, and more particularly to a novel and improved valve for use in conjunction with floor waxing or treating machines.

' In the line of floor waxing machines which I have developed, I-preferably utilize a solid wax, since such solid wax produces a better floor finish than liquid waxes, such liquid waxes containing softening ingredients, which detract from their polishing properties.

In my novel machines I utilize heating units to reduce the solid wax to a liquefied state, and preferably so locate the heating units that all channels through which the liquefiedwax flows will be heated, thus insuring a constant and eflicient flow of wax' nates the frame of mynovel machine, which is preferably formed as a casting having an from the wax pot or container to the point of discharge.

An important object of my present inven: tion is the provision ofa novel valve primarily adapted and suitable for use in conjunction with machines of this type.

A further. feature of the lnvention resides in the arrangement and construction of the said valve and the tube through which the wax passes to the floor. By reason of this particular arrangement and construction, I am enabled to quickly and thoroughly clean the said valve and said tube from end to end, without the delays which would be caused by the removal of parts of said valve, tube or machine to effect this cleaning. Thus, should the wax fail to flow freely because of the presence of any foreign substances lodgin in either the valve or the discharge tube, it is a matter of but an instant to thoroughly clean said valve and tube because of the continuous passage or bore which I have provided therethrough.

It is also desirable, after the machine has been used for a waxing operation, to swab out or clean the valve and tube, to leave the same in proper condition for the next subsequent floor treatment. I This, as above explained,

' can be readily accomplished in my novel structure.

Further features and objects of the invention reside in the particular construction of my novel valve and its cooperating parts.

plate 19 of the casting The above and other= objects and features of the inventlon, details of construction, combinations of parts, and advantages, will be hereinafter more fully pointed out, described and claimed. 7

Referring to the drawings, illustrating a preferred embodiment of my invention, 1

Fig. 1 is a longitudinal vertical sectional view of a floor waxing machine having my novel valve structure lncorporated therein;

ann'ular boss 2 on its upper surface to which is attached a housing 3 containing a suitable motor.

At the rear of the frame 1 is a yoke 4: adapted to receive one end 5 of a suitable handle 6, a screw or other tightening element 7 clamping the sides of the yoke against the end 5 of the handle. Depending from the motor 3 is. a driving shaft 9 having a pinion 10 on its lower end, said pin-ion meshing with and ro- 'tating a gear 11 attached to a casting 12, a ring 13 being secured to said casting by screws 14, said rin resting on the outer race 15 of a 16 resting on a collar 17 on the tubular memwith said tubular member. Aflixed to the 12 by screws 20 are a ates 21, adapted to supluralit of lockin p y gp is aflixed a brush port a member 22 to which frame or base 23 having thereon tufts of vbristles 24. This'particular type of brush attachment is illustrated'and described in detail in m copending application, Serial No.

suitable anti-friction bearing, the inner race 420,975 ed January "15,1930, and is not, I

9 therefore, described in detail herein.

On the frame 1- is a we; pct 25, having at one side thereof an internally threaded oss 26through which is-threaded the up 'er end of a tube '27, a lock nut ,28 preventing oosening of said tube. -The upper endof said tube is provided. with a valve seat 29, and an aperture is provided through the wall of said wax pot leading to said tube. Surrounding said tube 27 is a heating unit 31,- confin'ed within a tube or sleeve 32, a nut 33 being threaded on to said tube 27 and confined within the tube or sleeve 18, to support said heating unit. The upper end of the sleeve 18 is threaded into a nut 34 which rests on the frame 1, to support said sleeve 18 and parts carried thereby. 4

Threaded to the lower end of the tube 27 is a nipple 35 having a discharge orifice 36 therethrough. On the same sideof the wax pot 25 as the boss 26 is a housing 36 having a tubular interior 37. Threaded to the top of the housing 36 is a nut 38 having oppositely disposed slots 39 and oppositely disposed notches 40. Slidable through said nut 38 is a tube 41 formed at its lower end asa valve 42 adapted to normally seat on the valve seat 29 in the 5 tube 27. Adjacent to the bottom of said tube 41 is a collar 43, and surrounding said tube 41 and confined between the collar 43 and lower end of the nut 38 is a c oiled spring 44, normally retaining the valve 42 in its seat 29 under tension. Secured to the upper end of the tube 41 is a sleeve 45 having a pair of depending tongues 46 thereon, and being provided with one or more handle members 47. The tongues 46 are normally seated in the slots 39,

the lower end of the sleeve 45 being prefer-' ably slightly above the upper end of the-nut 38, to compensate for wear between the valve 42 and its seat 29. When it is desired to effeet a flow of liquefied wax from the pot 25,

the tube 41 may be raised by the handles 47, pulling the tongues 46 out of their slots or grooves 39, and efiecting a quarter turn of the sleeve 45, which will seat tongues 46 in the notches 40, this upward pull of the tube 41 being against the tension of the coiled spring 44, and raising the valve 42 from its seat 29,

which will then permit the wax to fiow from the pot 25 through the aperture 30, and downwardly through the tube 27 and orifice 36 to the floor. When it is desired to stop the flow of wax from the pot 25, the sleeve 45 will be turned'a quarter turn, whereupon the spring 44 will force the tube 41. downwardly, reseating the valve '42 on its seat 29, and the tongues 46 in their slots or grooves 39.

From a glance at the drawings, it will be apparent that there is a continuous passage from the top of the tube 41 ,completely through said tube as well as through the tube 27 to its lower end. A wire, small brush, or swab, ,may, therefore, be instantly run through said tubes 41 and 27 to effect an efficient cleaning thereof in a short space of time. The advantages of this valve construction will be instantly apparent to those skilled in the art;

In order to reduce the wax in the pot 25 to a state of liquefaction, I provide a heating unit 50 below the floor 51 of said wax pot, current conducting wires 52 being connected to terminals 53 on said heating unit, an insulating disc 54 being located beneath the unit 50 and supported by a plate 55, said plate being secured to the central post 56 by means of a nut 57, the wax pot having a cap or cover 58 held in position by an end nut 59. Current conducting wires 60 lead from the terminals 53 to the heating unit 31, to insure continuous heat through to the bottom of the tube 27, and thus preventing clogging of the tube 27 during operation. An a erture 61 is provided through the wall 0 the wax pot 25 opposite the aperture 30, to permit drilling of said aperture, the hole or aperture 61 being closed by a threaded plug 62.

It will also be appreciated that my novel valve and discharge tube, may be cleaned even though the waxpot 25 is full of wax. This is an important advantage, since the operator does not have to empty the wax pot 25 in order to effect a thorough cleaning of said valve and discharge tube. The benefits and advantages of this feature will be readily understood and appreciated by those skilled in this art.

While I have necessarily described my resent invention somewhat in detail, it W1 1 be appreciated that I may vary the size, shape being provided with a continuous bore therethrough, whereby simultaneous cleaning of said bore may be effected.

2. Valve mechanism of the kind described,

comprising a valve stem, a beveled end on said stem, a discharge tube having a beveled seat adapted to receive the beveled end of said valve stem, and means to normally retain the beveled end of said stem on said seat,

said stem and said tube each being provided with, a continuous bore therethrough, whereby simultaneous cleaning of said bore may be effected. Y

3. Valve mechanism of the kind described,

comprising a valve stem, a beveled end on said stem, a discharge tube having a beveled seat adapted to receive the beveled end of said valve stem, and spring means to normal'ly retain the beveled end of said stem on said seat,"said stem and said tube each being provided with a continuous bore therethrough, Whereby'simultaneOus cleaning of saidsbore may be efiected.

4. Valve mechanism of the kind described,

comprising a valve stem, a beveled end on said stem, a discharge tube having a beveled seat adapted'to receive the beveled end of said valve stem, spring means to normally retain the beveled end of said stem on said seat, said stem and said tube each being provided with a continuous bore therethrough, whereby simultaneous cleaning of said bore may be ef- -fected, and means whereby the beveled end of said stem may be removed from said valve seat.-

5. Valve mechanism of the kind described, comprising a valve stem, a beveled end on said stem, a discharge tube having a beveled seat adapted to receive the beveled end of said valve stem, spring means to normally retain the beveled end of said stem on said seat, said stem and said tube each being provided with a continuous bore therethrough, whereby simultaneous cleaning of said bore may be effected, means whereby the beveled end of said stem may be removed from said valve seat, and means to maintain said bev- .while said Wax pot has wax therein.

7. In a machine of the kind described, a wax pot having a chamber at one side thereof and having ,an aperture leading into said chamber, a discharge tube having its upper end located at the bottom of said chamber and provided with a valve seat, a removable nut attached to said wax pot at the upper end of said chamber, a valve stem slidable through said nut, a collar on said valve stem adjacent to the lower end thereof, and a spring surrounding said valve stem between said collar and said nut to normally retain said valve stem in seated position, saidvalve stem and said discharge tube having a continuous bore therethrough to permit cleaning thereof. a

8. In a machine of the kind described, a wax pot having a chamber at one side thereof and having'an aperture leading into said chamber, a discharge tube having its upper end located at the bottom of said chamber and providedwith a valve seat, a removable nut attached tosaid wax pot at the upper .end of said chamber, a valve stem slidable through said nut, a collar on said valve stem adjacent to the lower end thereof, a spring valve stem in seated position, said nut having a pair of slots in theupper end thereof, a sleeve aflixed to the upper end of said sleeve stem, and a pair of depending tongues on said sleeve adapted to seat in said slots when said valve is in seated position.

9. Ina machine of the kind described, a wax plot having a chamber at one side thereof and aving an aperture leading into said chamber, a discharge tube having its upper end located at the bottom of said chamber and provided with a valve seat, a removable nut attached to said wax pot at the upper end of said chamber, a valve stem slidable through said nut, a collar on said valve stem adjacent to the lowerend thereof, a spring surrounding said valve stem between said collar and said nut to normally retain said valve stem in seated position, said nut having a pair of slots in the upper end thereof, a sleeve a'ffixed to the upper end of said valve stem, and a pair of depending tongues on said sleeve adapted to seat in said slots when said valve is in seated position, said nut having a pair of notches on its upper edge disaligned from said slots and of less depth-than said slots, said stem being slidable through said nut, against the tension of said spring, whereby, when said tongues are free of their slots, a partial turn of said sleeve will seat said tongues in said notches and hold-said valve stem in unseated position.

10. Valve mechanism of the kind described, comprising a valve stem, a discharge tube having a seat adapted to receive one end of said valve stem, said stem and said tube each being provided with a continuous bore therethrough, said bores being in alinement, whereby simultaneous cleaning of the bores of said stem and said tube may be effected.

In testimony whereof, I have' .signed my name to this specification.

GUSTAF I. JOHNSON. 

